>> Which is why they are allowing people to use the app without accepting the terms and conditions.

Are they? For a couple of months now when I try to see my messages I am asked to "Agree" with their terms and there's no way to go past that screen that I can see, other than pressing "Agree".

I'm in a weird position though: I'm an EU citizen with a UK number. So I'm not even sure the GDPR covers me proper. If I understand correctly, under the GDPR I should be given an option to not "Agree" and still continue to my messages.